Robust power exhaust schemes employing impurity seeding are needed for target operational scenar- ios in present day tokamak devices with metallic plasma-facing components (PFCs). For an electricity- producing fusion power plant at power density P sep /R > 15 MW/m divertor detachment is a requirement for heat load mitigation. 2D plasma edge...
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July 31, 2020 (v1)PublicationUploaded on: March 27, 2023
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July 31, 2020 (v1)Publication
New techniques that attempt to more fully exploit spectroscopic diagnostics in the divertor and pedestal region during highly dissipative scenarios are demonstrated using experimental results from recent low-Z seeding experiments on Alcator C-Mod, JET and ASDEX Upgrade. To exhaust power at high parallel heat flux, q ‖ > 1 GW/m 2 , while...
Uploaded on: December 4, 2022 -
August 25, 2020 (v1)Publication
Future fusion reactors require a safe, steady state divertor operation. A possible solution for the power exhaust challenge is the detached divertor operation in scenarios with high radiated power fractions. The radiation can be increased by seeding impurities, such as N for dominant scrape-off-layer radiation, Ne or Ar for SOL and pedestal...
Uploaded on: December 4, 2022 -
March 22, 2019 (v1)Publication
SOLPS 5.0 simulations assuming convection-dominated radial ion transport show qualitative and quantitative agreement with measurements of detached high-field side (HFS) divertor conditions for unseeded low-power L-mode plasmas in ASDEX Upgrade, while simultaneously maintaining a reasonable match to the density and temperature measurements at...
Uploaded on: December 4, 2022